Electrically operated vacuum cleaner



March 26, 193541' Rf-BSS ELECTRICALLY OPERATED VACUUM CLEANER .Filed Aug. S, 1932 v42 f ,Que/N BASS,

y Patented Mar. v26, 1935 #UNITED STATES PATENTor-Flce 1,995,630 ELEcTnicALLY oPEaATEn VACUUM CLEANER Rubin Bass, Brooklyn, N. -v Y., assixnor to Amerlean Plush Velvet Pressboard Co., Inc., New York, N. Y., a corporation of New York Application August 5, 1932, Serial No. 627,640

8 Claims. (Cl. 15l) My invention relates to apparatus sometimes mits ventilation and also makes it possible to incalled vacuum cleaners and especially a rotary spect the commutator and brushes without takbrush type. lng the case apart. Certain parts of the field Among the objects of the invention are to prostructure are cut away as shown in Figure 1 to vide a simple, inexpensive, compact, reliable, decrease the weight of the structure and to pro- 5 durable and well balanced device of small size vide for a better air passage within the sleeve 20. which can be readily manufactured, inspected, The circuit is controlled by a suitable switch 24 cleaned and repaired. which is secured to the sleeve 20 and provided with Special objects are to provide a casing which an external operating knob in the usual manner.

?""'l0 is smooth on the outside so that it will not catch In order to prevent the motor from overheat- 10 on fabrics being cleaned, to prevent overheating, ing I preferably provide a fan 25 which is seto avoid so far as possible clogging of the brush cured to the upper part of shaft 16 and the hood or damage to the belt and to facilitate removal 11 is provided with a number of openings 26 to and replacement of the brush and cleaning of permit the circulation of air around the upper the brush and belt chamber. The drawing illuspart of the motor and upper bearing. 'I'he fan 15 trates the preferred form of the invention. and armature are assembled and inserted into Fig. 1 is a vertical longitudinal sectional view the hood as a unit and then the sleeve with the illustrating the invention. ileld structure and brushes. By mounting the Fig. 2 ris a horizontal sectional view substanbrushes and switch in the sleeve near the mouth tally on the plane of the line 2--2 of Figure 1, of the hood I amA able to make the hood per- 20 with a part of the flange of the hood member fectly smooth on the exterior.

broken away. 'I'he suction fan or blower 30 is mounted on Fig. 3 is a vertical transverse sectional view the 10Wer end Of the Shaft 16 beneath the plate showing the brush and its supports. 12 and in the suction chamber 31 being held in Fig. 4 is an inside view of a fragment of the Place by the pulley 32 which iS Screwed On 't0 25 l bottom plate. the bottom of the shaft.

Fig. 5 is a transverse sectional view of the The bOttOm 0f the bOdy 0f the Casing iS DrO- f brush. vided with a chamber 33 which contains the Fig. 6 is a longitudinal sectional view showing driving Pulley 32 and the brush 34 and the qualparts of a brush and its bearing. ter turn belt 35 which connects the pulley 32 and 30 Fig. 7 is a fragmentary section showing the the pulley 36 of the brush structure. The brush support'I for the motor eld at right angles to is so constructed that it can be inserted and re- Figure 1 on line 7 7, moved as aunit to facilitate cleaning and replace- The casing is made up of two parts, the lower ment. The belt is preferably formed of elastic 35 or body member casting 10 containing the brush Tubber- The Shaft 37 0r Spindle 0f the brush iS 35 and suction device and the upper one-piece hood Preferably tubular and Provided With anti-friemember 11 containing the motor with its brushes tien bearings 38 supported in metal housings 39. and switch and a cooling fan. These two parts These bearings and housings are removably have appropriate chambers separated by a par.. mounted on the ends of the shaft 37 and held tition or intermediate plate 12 and are held toin Dlaee by the eyelet members 40 which ilt snugly gether-by a number of screws 14 in the ends oi' the shaft. Each end of the brush The motor is preferably of the universal type Shaft 1S Preferably PrOVided With a guard Washer having a rotating armature 15 With a shaft 16, 41, the Iiange of Whieh extends outwardly Over a top bearing 17 in theupper end of the hood the rim of the housing 39 so as to prevent threads and a, bottom bearing 18 in the plate 12. As parand dust and lint from getting into the bearings. 45

ucumriy shown in Figure 7, the nem structure The brush is also preferably provided with fins 19 inducing nem. coils 19" is suitamy secured 42 0r plates arranged between the brush tufts to a sleeve 20 by screws 19' which engage in so that when threads are wound up on the brush v )y 1ugs 2o which are bent inward1y from the wail they will be spaced apart from the Shaft in Sueh of the sleeve 20, this sleeve has a ange clamped a Way that it will beleasy to insert the point oi 50 between the base nange of the hood 11 and the' a pair of Shears for the purpose of cutting the bottom plate 12 by screws 14. This sleeve 20 threads and removing the same. also has inwardly pressed strap portions 21 These ns may be suitably formed, for instance,

l which support suitable brush structures 22. The by stamping them into channel-like shape and hood is provided with an opening 23 which perrivetting or otherwise securing them to the shaft 37. Preferably these dns are concave along their edges and of less radial extent in the center of each brush section than at the ends of the brush sections. The result is that the threads tending to collect on the shaft are naturally drawn toward the center where they can be more easily cut and removed.

The opposite sides of the chamber 33 are provided with open ended bearing sockets, 43, into which the hubs of the housings 39 are adapted to be inserted and secured. Spring abutments 44 are preferably provided to engagev the hubs of the brush bearings.

It will be noted that the entire bottom of the casing chamber 33 is open so as to facilitate inspection of the brush and belt and removal for cleaning and replacement. A bottom plate 45 is hinged to the casing at 46 and provided with a flange 47 which fits within the edge of the chamber 33. The relatively narrow part of this bottom plate 45 is oit-set from the remainder so as to provide a foot provided with two openings or mouths 48-48 separated by a bridge 49 which covers the belt. This bridge is preferably provided with flanges 50 which overlap the edges of the pulley 36 so as to protect the belt and the pulley from thread. dirt, etc.

Flanges 51 are also preferably provided to guard the edges of the bearing flanges or washers 41 and prevent thread and dirt from clogging up the ends of the brush. The bottom plate 45 has lugs or abutments 52 on opposite sides adapted to press against the hubs of the bearing members 39 to hold them in place against the yielding pressure of the springs 44.

The upper part or hood of the casing and the body of the casing may be formed of aluminum or other light metal or alloy, to keep down the weight and improve the appearance of the device. A yielding steel or other durable latch 53 is secured to the bottom plate inside the casing where it engages the spring pressed plunger 54 to yieldingly hold the bottom plate inplace against the pressure of the springs 44. 'Ihe bottom plate 45 is extended to form a finger-piece 55 to facilitate opening the casing for inspection, repair, etc.

The bottom plate is so constructed so as to prevent any part of the brush structure (except the bristles) from coming in contact with the fabric being cleaned.

It is understood that the device may have a handle portion 56 with an extension 57 of any suitable sort and provided with a suitable dust collecting receptacle as usual if desired. 'Ihe apparatus can also be used for blowing purposes and for fumigating or deodorizing without a dustbag, in which event the brush may also be removed or a fumigator may be employed together with the dust removing brush and collecting bag.

The construction of the brush with the attached bearings and guard members is claimed in my application 646,603, filed December l0, 1932.

I claim:

1. A vacuum cleaner device comprising a casing having a suction and brush chamber open at the bottom, sockets at opposite sides of the brush chamber open downwardly of the chamber, a resilient bumper in the upper part of each socket, a brush having a shaft with anti-friction bearings secured on the ends thereof and detachably mounted in said sockets, a bottom plate hinged to the casing adjacent the brush and having an opening beneath the brush through which only the bristles of the brush can protrude, said plate having abutments holding the bearings in place and a latch for the bottom plate capable of holding it in place against the pressure of the resilient bumpers, said plate having a linger piece to facilitate release of the latch and opening of the plate.

2. A vacuum cleaner having a casing with a removable cover plate, said casing having open sockets in its side walls, a brush having a shaft with anti-friction bearings mounted in said sockets, the sockets being open to permit the ready insertion and removal of the brush shaft and its bearings said cover plate having abutment lugs coacting with said bearings to hold the brush in place, a resilient bumper in each socket preek ing the bearings on the ends of the shaft against said lugs and means for holdingy the cover plate in place.

3. A vacuum cleaner having a casing with a brush chamber, a brush mounted to rotate in the casing, a detachable bottom plate for the chamber having an opening for operation of the brush, bearings for the brush detachably mounted in the casing and having guard washers, and flanges on the plate overlapping the edges of the guard washers to prevent threads from interfering with the bearings.

4. A vacuum cleaner having a casing, a brush having a shaft and drive pulley with bearings detachably mounted in the casing, and a cover plate having guard flanges overlapping an edge of the pulley and the bearings to prevent threads from interfering with the pulley and its belt and the bearings.

5. A vacuum cleaner device having a casing with sockets, a brush having bearings detachably supported in said sockets, a bottom plate for the casing having an opening four the action of the brush, said brush having guard washers adiacent the bearings and the plate having guard flanges overlapping the rims of the washers.

6. In a vacuum cleaner, a brush having a spindle with a pulley for a driving belt, bristles fastened to the spindle, a housing for the spindle having openings for the bristles to passtherethrough and flanged guard plates formed on the housing and overlapping the edges of the pulley in a manner to protect the belt from thread, dirt, and the like.

7. A vacuum cleaner device comprising a body portion containing a brush and suction device, a motor for driving said brush and suction device, comprising a stator, a rotor, a shaft for said rotor, bearings for said shaft, and motor brushes, a par'- tation between said body portion and said motor, one of said bearings being located in said partition, said shaft extending through said partition and driving said brush and suction; device, a

sleeve mounted on said body portion, said stator and said motor brushes secured within and supported by said sleeve, a hood surrounding and completely enclosing said sleeve, a second bearing being secured within said hood, and being removable therewith, and means for securing said hood directly to said body portion.

8. A vacuum cleaning device comprising a body portion containing a brush and a suction device, a motor for driving said brush and `said suction device, a partition between said motor and said body portion, said motor comprising a stator, a rotor, a shaft for said rotor and bearings for said rotor shaft, one of said bearings being located in said partition, said shaft extending through said partition and driving said brush and said suction device, a sleeve mounted on said body portion, said stator and said motor brushes being secued within and supbortsd by said sleeve` a hood surrounding and completely enclosing said sleeve, a second bearing being within said hood v and being removable therewith, said ilrst bearingr 5 having a bearing surface substantially longer than said second bearing, a commutator on said rotor, 

